Home / 2,910.10-4,365.20-1,929.21

Finding the Fourth Proportional to 2,910.10, 4,365.20 and 1,929.21

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Solution

The fourth proportional to 2,910.10, 4,365.20 and 1,929.21 is: 2,893.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.10 : 4,365.20 = 1,929.21 : x
  2. Step 2: Convert to fraction form
    2,910.10/4,365.20 = 1,929.21/x
  3. Step 3: Cross multiply
    2,910.10x = 4,365.20 × 1,929.21
  4. Step 4: Simplify right side
    2,910.10x = 8,421,387.49
  5. Step 5: Solve for x
    x = 8,421,387.49/2,910.10
  6. Step 6: Final answer
    x = 2,893.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.